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pixmap_button.h

/*
    Copyright (C) 1999 Paul Barton-Davis 

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

    $Id: pixmap_button.h,v 1.1.1.1 2001/11/24 00:44:46 pbd Exp $
*/

#ifndef __pbd_gtkmm_pixmap_button_h__
#define __pbd_gtkmm_pixmap_button_h__

#include <gtk--.h>
#include <gtkmmext/shaped_window.h>

namespace Gtkmmext {

class Pix;

class PixmapButton : public ShapedWindow

{
  public:
      PixmapButton (Pix *, const char *widget_name = 0, 
                  bool sensitive_to_state = true,
                  int button_mask = ~0);
      SigC::Signal0<void> pressed;
      SigC::Signal0<void> released;
      SigC::Signal0<void> clicked;
      SigC::Signal0<void> double_clicked;
      SigC::Signal0<void> triple_clicked;

      void set_button_mask (int mask) {
            button_mask = mask;
      }

      void click_on_press () {
            mode = ClickOnPress;
      }
      void click_on_release () { 
            mode = ClickOnRelease;
      }

      bool get_active () {
            return active;
      }

      void set_active (bool yn) {
            active = yn;
            map_active ();
      }

      void toggle_active () {
            set_active (!active);
      }

 protected:
      virtual gint button_press_event_impl(GdkEventButton*);
      virtual gint button_release_event_impl(GdkEventButton*);
      virtual gint enter_notify_event_impl(GdkEventCrossing*);
      virtual gint leave_notify_event_impl(GdkEventCrossing*);

  private:
      enum ClickMode {
            ClickOnPress,
            ClickOnRelease,
      };
      ClickMode mode;
      GtkStateType pre_enter_state;
      int button_mask;
      bool active;
      bool prelight_sensitive;

      void map_active () {
            if (active) {
                  if ((GtkStateType) 
                      GTK_WIDGET_STATE(GTK_WIDGET(gtkobj())) !=
                      GTK_STATE_SELECTED) {
                        set_state (GTK_STATE_SELECTED);
                  } 
            } else {
                  if ((GtkStateType) 
                      GTK_WIDGET_STATE(GTK_WIDGET(gtkobj())) !=
                      GTK_STATE_NORMAL) {
                        set_state (GTK_STATE_NORMAL);
                  } 
            }
      }

};

} /* namespace */

#endif  // __pbd_gtkmm_pixmap_button_h__



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